Cities are recycling their presentations to lure Amazon to put a new HQ there to pitches other candidates.
I see this many times, a company that needs to pull out all the stops to present at a major conference or pitch competition. Ideas and energy of that pitch are re-used numerous times in other presentations. It is often that wake up call to get your act together, take more creative risk to present your idea with "nothing to lose".
There is a cost element to it as well. How can you get more return on that expensive video work? You need to try to find the balance between a personal and relevant pitch (rule #1 of sales presentations), and re-usable content. For videos, I usually request to have a clean version of the file without specific text banners or voice overs that cannot be separated. In that way you can re-use the assets for other projects.
Btw, these city pitches are very interesting. Here are 3 very different pitches. I think Detroit is the most inspiring. What do you think?